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6.2 Organic chemistry

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Question 3

A technician records the shortened formulae of two organic compounds.

SampleShortened formula
XCH3CH2COOH\mathrm{CH_{3}CH_{2}COOH}CH3​CH2​COOH
YCH3CH2CH2CH2COOH\mathrm{CH_{3}CH_{2}CH_{2}CH_{2}COOH}CH3​CH2​CH2​CH2​COOH

The technician compares their boiling points at the same pressure.

a.

What are the names of samples X and Y?

[2]
b.

Compare the boiling points of samples X and Y. Explain your answer.

[2]
Markscheme

6.2 Organic chemistry Questions

  1. GCSE
  2. /Chemistry
  3. /6.2 Organic chemistry

131 exam-style questions on OCR GCSE Chemistry 6.2 Organic chemistry, covering 6.2.1 Crude oil and fractional distillation, 6.2.2 Cracking and dependence on hydrocarbons, 6.2.3 Functional groups and homologous series, 6.2.4 Reactions of alkanes, alkenes and alcohols, 6.2.5 Addition polymerisation and repeat units, 6.2.6 Naturally occurring polymers, 6.2.7 Chemical cells and fuel cells, and 6.2.8 Condensation polymerisation and how to make one. Each one has a worked solution and a mark scheme showing where the marks go.

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